Bobbin carrier for braiding machines



Feb. 14, 1939. Q, MacMURRAY 2,147,493

BOBBIN CARRIER FOR BRAIDING MACHINES Filed March 17, 1937 2 Sheets-Sheetl Feb. 14 1939. o. M MuRRAY BOBBIN CARRIER FOR BRAIDING MACHINES FiledMarch 17, 1937 2 Sheets-Sheet 2 I INVENTOR BY %c% rd ATTORNEYS PatentedFeb. 14, 1939 UNITED snares AENT orrice Orrin MaoMurray, South to B. F.Gladtlirlg &

Otselic, N. Y., assignor Co. Inc., South Otselic,

N. Y., a corporation of New York Application March 17, 1937, Serial No.131,420

4 Claims.

This invention relates to braiding machines, and particularly to bobbincarriers therefor, and more particularly to bobbin carriers for braidingmachines in which the carriers travel along a serpentine path.

It has for its object means for normally holding the bobbins fromunwinding movement and releasable by the weights around which the threador yarn is looped to permit the thread or yarn to unwind from the bobbinunder the pull on the thread during the braiding operation.

It further has for its object a multiple bobbin carrier and a weight foreach bobbin thereon around which the thread or yarn leading from i thebobbin is looped.

It further has for its object a multiple bobbin carrier and weightsthereon, one for each bobbin,

around which the threads from the bobbins are looped respectively intheir passage to the former opening of the machine with the weightreleasing holding devices, which normally hold the bobbins fromunwinding movement, which are released by the weights, as the weightsapproach the upper ends of their movements under the draw of the threadsduring the braiding operation.

Other objects appear throughout the specification.

The invention consists in the novel features and in the combinations andconstructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanyingdrawings in which like characters designate corresponding parts in allthe views.

Figure l is an elevation of this multiple bobbin carrier.

Figures 2 and 3 are enlarged opposite end views, looking downward andupward, respectively.

Figure 4 is a detail view of one of the weights and companion latchoperated thereby and the holding device or pawl controlled thereby.

Figure 5 is a fragmentary View illustrating a portion of a conventionalbraiding machine provided with this bobbin holder, one bobbin holderbeing shown.

In Figure 5, designates an annular top plate which is formed with aserpentine track, groove l or slot 2 along which the bobbin holderstravel. 3 designates gears located beneath the top plate and carryingslotted wheels or cams 4 which receive studs or followers at the lowerend of each bobbin carrier. The wheels are actuated in any well knownmanner.

H designates the body of the bobbin holder. This is provided with a basell formed with a slide or shoe l2 movable in the serpentine slot 2. Thebase I l is also provided with a depending stud or follower M forcoacting with the slotted 5 wheels or cams 4 in the usual manner. Thebody It is here illustrated as in the form of a rectangular or oblongplate having wings l5 extending laterally from opposite corners on oneside thereof at an incline to the plane of the body, as seen 10 inFigures 2 and 3, for supporting the spindles on which the spools orbobbins are mounted. It is also formed with a plurality of guides orchannels 16 in the side thereof opposite to that on which the spools orbobbins are carried and also II with guides H, in the form of channels,in the edges of the oblong formation behind the wings l5.

l8 designates the spools or bobbins, these being mounted on studs l9projecting from the wings 20 I 5, these studs being arranged at a rightangle to the wings, so that the studs on one wing incline toward thestuds on the other wing. The spools or bobbins are rotatably mounted onthe studs.

20 designates the weights movable along the guides, that is, as hereillustrated, in the channels IE, there being one weight in each guide orchannel l6. These weights are in the form of elongated slides, as seenin Figure 4, and each is 30 formed on its inner edge, that is, the edgetowards the bottom of the guide or channel I6, with a thread groove 2|.The lower end of each slide or weight 26 is formed with a similar groove22 which continues upward at 23 in the outer edge 35 of the slide orweight 20.

24 are latches, one for each sliding weight 20 and each bobbin or spoolI8, these latches sliding in the channels ll. Each has an angularshoulrler 25 at its upper end. The shoulders 25 extend 40 across theupper ends of the grooves or channels it in which the sliding weights 20are located into the paths of the sliding weights 29. The shoulders 25of the latches-are of different lengths, as seen in Figure 2, so as tocoact with different weights or slides 20, and the slides 20 are soformed at their tops that they will engage the shoulder 25 of apredetermined latch 24. For instance, in Figure 4, the shortest latch 24is shown, and the upper end of the corresponding slide or weight 20 isformed with a notch 26 in its top to clear the adjacent latches 24 and24 (Figure 2). The shoulders 25 of the other latches are correspondinglynotched, so that each weight can operate but Y one particular latch. The55 the bOdy latches on one side of the body I are duplicates of those onthe other and are reversely arranged relative thereto (Figure 2).

Each spool is provided with a toothed wheel 21 at its inner end, withwhich coacts a holding device, as a pawl 28, for normally holding thespool from turning movement, particularly unwinding movement. Each pawlis mounted upon a rock shaft 29. These rock shafts 29 are mounted insuitable bearings in the wings l5, and each is actuated in one directionby a spring 30 to press the pawl into operative or holding position. Therock shafts extend through the wings Hi to the opposite sides of thewings to that on which the spools are mounted, and each is provided witha rock arm 3| at its inner end for coacting with an angular lug orshoulder 32 projecting outwardly from each latch 24. As here shown, therock shafts are mounted in sectional bearings formed partly in the edgesof the wings I and partly in the edges of the bearing strip 33 securedto the edges of the wings l5, as by screws 34. The springs 30 serve notonly to hold the pawls 28 interlocked with the toothed wheels 2'! butalso to hold the rock arms 3| against the shoulders 32 of the latches 24and to return these parts, after being operated, to their starting ornormal position.

The spools or bobbins are held on their spindles by the pawls 28, andfor this purpose, each toothed wheel 21 is interposed between one of theheads of its spool and a disk or shroud 35 mounted on the core 36 of thespool, so that the nose of the pawl 28 is located in a groove 31 formedby the shroud 35 and the head of the spool.

In the normal operation of the pawl, the nose does not pass entirely outof the groove 31 but by lifting up on the pawl, so that its nose movesout of the groove 37, the spool may be removed and replaced.

The threads or yarns T pass from the spools through bushed openings 38in the body these openings extending through the bottoms of the guidechannels l6 respectively for the sliding weights 20. The threads thenpass downwardly through the grooves 2|, 22 and 23 of the weights andupwardly through bushed openings 39 in an angular flange or shelf 40 atthe upper end of land thence through the braid former opening located inthe aXial line of the circular path of travel of the carriers along theserpentine track 2.

Each carrier is here shown as provided with six spools or bobbins.However, at certain periods of the braiding operation, all of thesebobbins may not be used, and hence the thread or threads of one or morebobbins in each carrier are broken and caught in a device, as a coiledspring 4 l, arranged adjacent the opening 39.

In Figure 2, the threads T from two of the bobbins are shown as out ofuse and caught inthe spring 4|.

If a thread breaks during the braiding operation, its correspondingweight 20 will drop and its lower end fall below the lower edge 42 ofthe body H, where it is in position to strike and operate a lever orother device to automatically stop the machine. As automatic stoppingdevices operated by weights are old and well known, it is thought thatfurther description of this feature is unnecessary.

In braiding certain articles, as for instance, fish lines, a taper issometimes given to one or a both end portions of the line, and henceduring the braiding, a less number of bobbings of each carrier than thewhole number on each carrier, may be used, and as the braidingprogresses, the machine may be stopped and additional threads connectedup through the braid former opening, until the full number of threads oneach bobbin carrier is used, and then after a given length of line hasbeen braided, the line again is tapered by from time to time removing ordisconnecting the bobbins by breaking the thread and hooking their endsin the device 4|.

In operation, the threads from the bobbins are passed through bushedopenings 38 and looped in the grooves 2|, 22, 23 of the respectiveslidable weights 2B, and passed through the bushed openings 39, andthence to the braid former opening. As the carrier travels along theserpentine track 2, or during the braiding operation, the draw on thethreads causes the weights 20 to slide upwardly, until they individuallystrike and operate the companion latches 25, carrying the latches 25upwardly. The upward movement of the latches is transferred to the rockshafts 29 and the pawls 28 through the rock arms 3|. When the pawls 28are released from the toothed wheels 21, the bobbins or spools are freeto turn under the pull of the braiding mechanism on the thread.Immediately after this operation, the weights take up the slack and indropping, permit the spring 30 to react and again engage the toothedwheel 2i and hold the spool from turning movement.

What I claim is:

1. A bobbin carrier for braiding machines in which the bobbins travel ina serpentine path, the carriers comprising an upright body having meanson one side thereof for supporting a plurality of bobbins, and guides onthe opposite side of the body, the body being also provided with guidesin the edges thereof between said sides, movable weights in the firstguides, one for each bobbin, and around which the threads leading fromthe bobbins are looped, the weights having an up and down movement underthe pull of the threads during the braiding operation, latches movablein the second guides and having shoulders arranged in the paths of theweights to be engaged thereby, when the weights approach the ends oftheir upward movements, and holding devices for normally holding thebobbins from turning movement under the draw of the thread, the latcheshaving means for actuating the holding devices to release them.

2. A bobbin carrier for braiding machines in which the bobbins travel ina serpentine path, the carriers comprising an upright body having meanson one side thereof for supporting a plurality of rows of bobbins, slotsextending lengthwise of said body on the opposite side thereof formingguides, the body being also provided with slots extending lengthwisethereof forming guides in the edges thereof between said sides, movableweights in the first guides, one for each bobbin, and around which thethreads leading from the bobbins are looped, the weights having an upand down movement under the pull of the thread during the braidingoperation, latches movable in the second guides and having shouldersarranged in the paths of the weights to be engaged thereby when theweights approach the ends of their upward movement, and holding devicesfor normally holding the bobbins from turning movement under the draw ofthe thread, the latches having means for actuating the holding devicesto release them.

3. A bobbin carrier for braiding machines in which the bobbins travel ina serpentine path, the carrier comprising an upright body having Wingsextending laterally from opposite corners on one side thereof at anincline to the plane of the body for supporting a row of spindles,bobbins mounted on said spindles, slots extending lengthwise of saidbody on the opposite side thereof forming guides, the body being alsoprovided with slots extending lengthwise thereof forming guides in theedges thereof between said sides, movable weights in the first guides,one for each bobbin, and around which the threads leading from thebobbins are looped, the weights having an up and down movement under thepull of the threads during the braiding operation, latches movable inthe second guides and having shoulders arranged in the paths of theweights to be engaged thereby when the weights approach the ends oftheir upward movement, and holding means for normally holding thebobbins from turning movement under the draw of the thread, said holdingmeans locking the bobbins on their spindles, the latches having meansfor actuating the holding devices to release them, and further actuationof the holding devices unlocking the bobbins from their spindles.

4. A bobbin carrier for braiding machines in which the bobbins travel ina serpentine path,

the carrier comprising an upright body having wings extending laterallyfrom opposite corners on one side thereof at an incline to the plane ofthe body for supporting a row of spindles arranged at a right angle tothe wings so that the spindles on one wing incline toward the spindleson the other wing, bobbins mounted on said spindles, slots extendinglengthwise of said body on the opposite side thereof forming guides, thebody being also provided with slots extending lengthwise thereof formingguides in the edges thereof between said sides, movable weights formedwith thread grooves in the first guides, one for each bobbin, and aroundwhich the threads leading from the bobbins are looped, the weightshaving an up and down movement under the pull of the thread during thebraiding operation, latches movable in the second guides and havingshoulders arranged in the paths of the weights to be engaged therebywhen the weights approach the end of their upward movement, and holdingmeans for normally holding the bobbins from turning movement under thedraw of the thread and for locking the bobbins on their spindles,movement of the latches actuating the holding devices to release them,and said holding devices being manually operated to unlock th bobbinsfrom their spindles.

ORRIN MACMURRAY.

